How To Use Dhcpv4 Relay On The Switch - ZyXEL Communications GS1920v2 Series User Manual

Go to
7
Adva nc e d Applic a tio n
>
C o nfig ure
Then select
Ye s
If you want to add more information in the DHCP request packets such as source VLAN ID or system
name, you can also select an
Tutorial: Enable DHCP Snooping on this VLAN
Fig ure 43
Click at the top right corner of the web configurator to
8
Sa ve
save the configuration permanently.
Connect your DHCP server to port 5 and a computer (as DHCP client) to either port 6 or 7. The computer
9
should be able to get an IP address from the DHCP server. If you put the DHCP server on port 6 or 7, the
computer will not able to get an IP address.
10 To check if DHCP snooping works, go to
, you should see an IP assignment with the type
Se tup
Tutorial: Check the Binding If DHCP Snooping Works
Fig ure 44
You can also telnet. Use the command "show dhcp snooping binding" to see the DHCP snooping
binding table as shown next.
sysname# show dhcp snooping binding
MacAddress
-----------------
00:02:00:00:00:1c
Total number of bindings: 1
6.3 Ho w to Use DHC Pv4 Re la y o n the Switc h
This tutorial describes how to configure your Switch to forward DHCP client requests to a specific DHCP
server. The DHCP server can then assign a specific IP address based on the information in the DHCP
requests.
Chapter 6 Tutorials
>
IP So urc e G ua rd
, show VLAN 100 by entering 100 in the
VL AN
in the field of the VLAN 100 entry shown at the bottom section of the screen.
Ena b le d
O ptio n82 Pro file
IpAddress
---------------
10.10.1.16
GS1920v2 Series User's Guide
>
IPv4 So urc e G ua rd Se tup
Sta rt VID
in the entry. See Section 26.11.1.3 on page
>
Adva nc e d Applic a tio n
DHC P- Sno o ping
Lease
------------ -------------
6d23h59m20s dhcp-snooping
63
>
DHC P Sno o ping
and fields and click
End VID
256.
IP So urc e G ua rd > IPv4 So urc e G ua rd
as shown.
Type VLAN Port
---- -----
100 7
>
.
Apply